如何使用system.data.oracleclient为oracle创建包含主机名,实例名,用户ID,密码的连接字符串？

Data Source=(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=主机名)(PORT=端口号))(CONNECT_DATA=(SERVICE_NAME=实例名)));User Id=用户ID;Password=密码;

Data Source=(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=myhostname)(PORT=1521))(CONNECT_DATA=(SERVICE_NAME=myinstance)));User Id=myuser;Password=mypassword;

using System.Data;
using System.Data.OracleClient;

string connectionString = "Data Source=(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=myhostname)(PORT=1521))(CONNECT_DATA=(SERVICE_NAME=myinstance)));User Id=myuser;Password=mypassword;";

using (OracleConnection connection = new OracleConnection(connectionString))
{
    try
    {
        connection.Open();
        Console.WriteLine("连接成功！");
    }
    catch (Exception ex)
    {
        Console.WriteLine("连接失败：" + ex.Message);
    }
}